511cbce2ff
The new name is irq_poll as iopoll is already taken. Better suggestions welcome. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#ifndef IRQ_POLL_H
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#define IRQ_POLL_H
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struct irq_poll;
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typedef int (irq_poll_fn)(struct irq_poll *, int);
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struct irq_poll {
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struct list_head list;
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unsigned long state;
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unsigned long data;
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int weight;
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int max;
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irq_poll_fn *poll;
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};
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enum {
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IRQ_POLL_F_SCHED = 0,
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IRQ_POLL_F_DISABLE = 1,
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};
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/*
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* Returns 0 if we successfully set the IRQ_POLL_F_SCHED bit, indicating
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* that we were the first to acquire this iop for scheduling. If this iop
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* is currently disabled, return "failure".
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*/
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static inline int irq_poll_sched_prep(struct irq_poll *iop)
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{
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if (!test_bit(IRQ_POLL_F_DISABLE, &iop->state))
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return test_and_set_bit(IRQ_POLL_F_SCHED, &iop->state);
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return 1;
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}
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static inline int irq_poll_disable_pending(struct irq_poll *iop)
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{
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return test_bit(IRQ_POLL_F_DISABLE, &iop->state);
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}
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extern void irq_poll_sched(struct irq_poll *);
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extern void irq_poll_init(struct irq_poll *, int, irq_poll_fn *);
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extern void irq_poll_complete(struct irq_poll *);
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extern void __irq_poll_complete(struct irq_poll *);
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extern void irq_poll_enable(struct irq_poll *);
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extern void irq_poll_disable(struct irq_poll *);
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#endif
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